when we talk about cooling system, it is the best to get a thick laptop but it might be heavier. thinner ones look compact and easy to hold but thinness can trap lots of heat, which may result to uncomfortable usage after long hours (if no sufficient cooling was provided, might ended up hardware damage). and to advice, dont get touchscreen laptops, they are very useless and you might dont even use it after you purchased it.
for the screen, it is best if you could go for IPS screens or 90% NTSC gamut screens, since it is useful for your PS and Illustrator works. the laptops that have average screen colour quality to the best :

Lenovo
Y510p, i7-4700MQ + Nvidia GT755M(GDDR5) + (1920x1080)@RM3399[2.7kg], 8GB, 1TB, W8.1, red backlit, swappable ODD, 120w psu, 2 yrs

Illegear
RE-15, i5-4200M + Nvidia GTX765M + (1920x1080)@RM3499[2.6kg][Onkyo, SoundBlaster Cinema], 4GB, 500GB(7200rpm), FreeDOS, [CPU Options: i5-4200M - i7-4900MQ]

ASUS
N56JR-S4018H, i7-4700HQ + Nvidia GT760M + (1920x1080)@RM3999[2.7kg], 12GB, 1TB, W8.1, backlit keyboard
N550JV-CN077H, i7-4700HQ + Nvidia GT750M + (1920x1080; IPS matte)@RM3699[2.7kg], 4GB, 1TB, W8, backlit keyboard

Acer
V7-582PG-74508G52k, i7-4500U + Nvidia GT750M + 24GB mSATA + 500GB HDD + (1920x1080 IPS; touch)@RM3399[2.2kg], 8GB, W8

prices are RRP and negotiable.

macbook not for gaming...